7x+15=x+3

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Solution for 7x+15=x+3 equation: 



7x+15=x+3

We move all terms to the left:

7x+15-(x+3)=0

We get rid of parentheses

7x-x-3+15=0

We add all the numbers together, and all the variables

6x+12=0

We move all terms containing x to the left, all other terms to the right

6x=-12

x=-12/6

x=-2

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